Blodgett 5279 OEM KX-38-36 Thermostat 140-550°F

Blodgett 5279 OEM KX-38-36 Thermostat – 140-550°F

The Blodgett 5279 Thermostat is an OEM KX-38-36 mechanical oven temperature control used in compatible Blodgett commercial cooking equipment. Designed for demanding foodservice applications, this thermostat responds to oven temperature through its sensing bulb and capillary system and controls the heating circuit to help maintain the selected operating temperature.

The Blodgett 5279 has a 140°F to 550°F temperature range, a 3/16" diameter × 11-5/8" sensing bulb, and a 36" capillary tube. These specifications are important when identifying the correct replacement because similar-looking commercial oven thermostats can have different temperature ranges, sensing-bulb dimensions, capillary lengths, control characteristics, and equipment applications.

OEM Part Details

• Manufacturer: Blodgett
• OEM Part Number: 5279
• Thermostat Type: KX-38-36
• Part Type: Commercial Oven Thermostat
• Temperature Range: 140°F to 550°F
• Sensing Bulb Diameter: 3/16"
• Sensing Bulb Length: 11-5/8"
• Capillary Length: 36"
• Application: Commercial Cooking Equipment

What the Blodgett 5279 Thermostat Does

The Blodgett 5279 oven thermostat is part of the equipment's temperature-control system. As oven temperature changes, the sensing bulb responds to those changes and allows the thermostat to cycle the heating circuit according to the selected temperature setting.

Proper thermostat operation helps provide:

• Accurate response to oven temperature changes
• Consistent commercial cooking temperatures
• Proper heating cycles
• Reliable oven preheating
• Temperature recovery after the oven door is opened
• Reduced excessive temperature swings
• Consistent baking and cooking performance
• Dependable operation in high-volume commercial kitchens

Compatible Blodgett Models

The Blodgett 5279 OEM KX-38-36 Thermostat is listed for compatible Blodgett commercial cooking equipment including:

• 1200
• CTB
• CTB POPEYES
• CTB WENDYS
• CTB-1
• CTB-AP
• CTBR
• CTBR POPEYES
• CTBR WENDYS
• CTBR-AP
• DFG-100
• DFG-200
• EF SERIES
• EZE SERIES
• MARK V KFC
• MARK V SERIES
• Mark V-100
• RE SERIES

Important Compatibility Note: Blodgett equipment can vary by production date, serial number, and control configuration. Parts information identifies production-date restrictions on certain CTB/CTBR, DFG, and Mark V applications. Always verify OEM part number 5279, the equipment model and serial number, production date where applicable, and the original thermostat before ordering.

Important Production-Date Information

Production date can be especially important when selecting a thermostat for older Blodgett commercial ovens. Different temperature controls were used during various equipment production periods.

Available application information identifies the 5279 for certain:

• CTB and CTBR equipment produced prior to applicable later control revisions
• DFG equipment produced prior to applicable later control revisions
• Mark V equipment produced prior to applicable later control revisions

Do not select a thermostat based only on the oven series name. Verify the original thermostat, model, serial number, and equipment production information whenever possible.

Common Signs of a Failing Oven Thermostat

Commercial cooking-equipment technicians may inspect the Blodgett 5279 when troubleshooting conditions such as:

• Oven will not reach the selected temperature
• Oven temperature runs significantly hotter than the control setting
• Oven temperature remains too low
• Heating does not cycle off correctly
• Heating stops before reaching the selected temperature
• Long or inconsistent preheat times
• Large temperature swings during operation
• Inconsistent baking results
• Intermittent heating
• Temperature adjustment does not produce the expected response
• Damaged sensing bulb
• Kinked or damaged capillary tube
• Burned, loose, or damaged thermostat terminals

These symptoms do not automatically confirm thermostat failure. Heating elements, burners, contactors, relays, wiring, safety controls, airflow, door condition, and other temperature-control components can create similar symptoms. Proper diagnosis should be completed before replacing the thermostat.

Technician Checks Before Ordering

Before replacing the Blodgett 5279 thermostat, qualified technicians should verify:

• OEM part number 5279
• KX-38-36 thermostat configuration
• 140°F to 550°F temperature range
• 3/16" × 11-5/8" sensing bulb
• 36" capillary length
• Equipment model
• Equipment serial number
• Production date where applicable
• Original thermostat identification
• Thermostat terminal configuration
• Sensing-bulb placement
• Capillary routing
• Associated wiring condition
• Heating-system operation
• Safety-control operation

Using the OEM part number as the primary identifier and comparing these additional specifications can help reduce incorrect-part orders.

Sensing Bulb & Capillary Inspection

The sensing bulb and capillary are critical to proper mechanical thermostat operation. Damage to either component can affect the thermostat's ability to respond correctly to temperature changes.

Technicians should inspect for:

• Kinked capillary tubing
• Crushed or flattened sections
• Sharp bends
• Physical damage to the sensing bulb
• Incorrect sensing-bulb positioning
• Loose sensing-bulb mounting
• Damage caused during previous service

The capillary and sensing bulb should not be cut, crushed, sharply bent, kinked, or otherwise modified.

Commercial Oven Applications

Compatible Blodgett commercial ovens using the 5279 thermostat can be found in demanding foodservice environments including:

• Restaurants
• Pizzerias
• Hotels
• Schools
• Hospitals
• Universities
• Institutional kitchens
• Corporate cafeterias
• Catering operations
• High-volume commercial kitchens

Installation & Service Notes

Disconnect electrical power and follow Blodgett service procedures before servicing the oven. Allow hot surfaces and internal components to cool to a safe service temperature before beginning work.

Before removing the original thermostat, document all electrical connections and carefully note the routing and position of the capillary tube and sensing bulb.

Install the replacement thermostat using the proper mounting arrangement. Carefully route the 36" capillary and position the sensing bulb correctly. Do not sharply bend, kink, crush, cut, or otherwise damage the capillary or bulb.

After installation, operate the oven through an appropriate heating cycle. Verify that the heating system cycles correctly and that actual oven temperature corresponds appropriately with the selected thermostat setting.

Installation, testing, and calibration should be performed by qualified commercial cooking-equipment service personnel.

Why Correct Thermostat Identification Matters

Commercial oven thermostats can appear almost identical while having different temperature ranges, sensing-bulb dimensions, capillary lengths, terminal arrangements, and operating characteristics.

Using Blodgett OEM part number 5279 along with the KX-38-36 designation, 140-550°F temperature range, 3/16" × 11-5/8" sensing bulb, and 36" capillary provides multiple identification points when comparing the replacement with the original thermostat.

Always verify the equipment model, serial number, production date where applicable, and original component before ordering.

Frequently Asked Questions

What is the Blodgett 5279 thermostat?

The Blodgett 5279 is an OEM KX-38-36 mechanical thermostat used for temperature control in compatible Blodgett commercial ovens.

What is the temperature range of the Blodgett 5279?

The thermostat has a 140°F to 550°F temperature range.

What size sensing bulb does the Blodgett 5279 use?

The sensing bulb measures approximately 3/16" in diameter × 11-5/8" long.

How long is the capillary tube?

The Blodgett 5279 uses a 36-inch capillary.

Which Blodgett models use the 5279 thermostat?

The 5279 is listed for compatible 1200, CTB, CTB POPEYES, CTB WENDYS, CTB-1, CTB-AP, CTBR, CTBR POPEYES, CTBR WENDYS, CTBR-AP, DFG-100, DFG-200, EF Series, EZE Series, MARK V KFC, MARK V Series, Mark V-100, and RE Series equipment.

Does Blodgett 5279 fit CTB and CTBR ovens?

It is listed for compatible CTB and CTBR applications, including several Popeyes, Wendys, and AP configurations. Production date is important on these older ovens, so verify the equipment identification and original thermostat before ordering.

Does Blodgett 5279 fit DFG-100 and DFG-200 ovens?

It is listed for compatible DFG-100 and DFG-200 applications. Production-date and original-component verification are recommended before replacement.

Does Blodgett 5279 fit Mark V ovens?

The 5279 is listed for compatible MARK V KFC, MARK V Series, and Mark V-100 applications. Verify the production date and original thermostat before ordering.

Can a bad Blodgett 5279 thermostat cause overheating?

A thermostat that does not properly interrupt the heating circuit can contribute to excessive oven temperature. Other heating and safety controls should also be inspected before the thermostat is condemned.

Can a failed thermostat cause a no-heat condition?

Yes. Depending on the failure, the thermostat may prevent the heating circuit from operating. Heating components, relays, contactors, gas controls where applicable, wiring, and safety devices can create similar symptoms.

Why does my Blodgett oven temperature fluctuate?

Temperature fluctuations can result from thermostat problems, sensing-bulb placement, heating-system faults, airflow issues, door problems, or other equipment conditions. Proper diagnosis is recommended.

Can I bend the thermostat capillary during installation?

The capillary can be carefully routed as required, but it should never be sharply bent, kinked, crushed, cut, or otherwise damaged.

How do I confirm Blodgett 5279 is the correct thermostat?

Verify OEM part number 5279, KX-38-36 configuration, 140-550°F range, 3/16" × 11-5/8" bulb, 36" capillary, equipment model and serial number, production date where applicable, and the original thermostat.

Is professional installation recommended?

Yes. Commercial oven thermostats should be diagnosed, installed, tested, and calibrated by qualified commercial cooking-equipment service personnel.

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